Natalie Portman made sure all eyes were on her on Sunday (17.05.15) at Cannes Film Festival when she wore a sheer backside dress that revealed the actress’ underwear. The ‘Black Swan’ star wore the racy outfit for a screening of ‘A Tale of Love and Darkness’ where the 33-year-old beauty rocked an eye-catching Rodarte dress, which featured intricate floral beading.